My invitation says "Black Tie Preferred," What does that mean?Updated 5 months ago

Invitations stating Black Tie preferred are for semi-formal events where the host and most guests will be wearing tuxedos. The "preferred" part of the invitation really means "wear a tuxedo"(any type of tuxedo except Tails). The host is having a posh affair, so you should look the part by wearing a tuxedo and enjoy being in a lavish environment for the night.